think about boys instead.
How can I get my mind off a girl?
Take a cold shower and read a good book. (not at the same time, you will ruin the book!! LOL)
Interact with other girls
Involve in activities and communities
Register for volunteer work
Focus on your life, education, work, goals and careers.
Generally, time, give it time. Be patient. And move forward.
Buy a motorbike.
Set your sights on another girl, get to know other people.
Cold shower buddy
do something that you enjoy like a hobby of yours or go talk a walk .